Electrical normally open contact

Abstract

An electric closer, in particular for a motor vehicle line, in particular a motor vehicle power line, comprising a first electrical terminal and a second electrical terminal, a first contact element which is electrically connected to the first terminal, a second contact element which is electrically connected to the second terminal, a connecting element with which an electrical connection can be established between the two contact elements, and a drive which effects a relative movement between the contact elements and connecting element, characterised in that the connecting element or the contact elements are formed at least in parts from an electrically conductive, porous metal.

1 - 13 . (canceled) 
     
     
         14 . Electrical normally open contact (NO contact), in particular for a motor vehicle cable, in particular a motor vehicle power line, comprising:
 a first electrical terminal;   a second electrical terminal,   a first contact element electrically connected to the first terminal;   a second contact element electrically connected to the second terminal;   a connecting element with which an electrical connection can be established between the two contact elements; and   a drive configured to cause a relative movement between at least one of the contact elements and the connecting element,   wherein the connecting element or the contact elements are formed at least in part from an electrically conductive, porous material wherein   the at least one contact element immersed into the electrically conductive material is circumferentially enclosed by the electrically conductive material of the connecting element or   the connecting element immersed into the electrically conductive material of at least one of the contact elements is circumferentially enclosed by the respective electrically conductive material of at least one of the contact elements.   
     
     
         15 . Electrical normally open contact according to  claim 14 , wherein the relative movement of at least one of the contact elements causes the contact elements to immerses into the electrically conductive material of the connecting element, or the connecting element immerses into the porous material of at least one of the contact elements. 
     
     
         16 . Electrical normally open contact according to  claim 14 , wherein
 an end region of the at least one contact element is completely enclosed by the electrically conductive material, or   a respective end region of the connecting element is completely enclosed by the respective electrically conductive material.   
     
     
         17 . Electrical normally open contact according to  claim 14 , wherein the electrically conductive material is a porous metal, in particular an open-pored or closed-pored metal foam, in particular made of an aluminium material or a copper material. 
     
     
         18 . Electrical normally open contact according to  claim 17 , wherein the porous metal has an average pore diameter between 0.2 and 4 mm. 
     
     
         19 . Electrical normally open contact according to  claim 14 , wherein at least one of the contact elements is formed in the shape of a mandrel and its tip is directed towards the connecting element, or in that the ends of the connecting element are formed in the shape of a mandrel and their tips are directed towards the respective contact element. 
     
     
         20 . Electrical normally open contact according to  claim 14 , wherein at least one of the contact elements is formed integrally with at least one of the terminals. 
     
     
         21 . Electrical normally open contact according to  claim 14 , wherein the connecting element is formed as a conductor bridge and in that the relative movement causes the connecting element to be immersed into the electrically conductive material of at least one of the contact elements. 
     
     
         22 . Electrical normally open contact according to  claim 14 , wherein the electrically conductive material is completely enclosed by a housing and the connecting element and/or the contact elements break through the housing wall when immersed into the electrically conductive material. 
     
     
         23 . Electrical normally open contact according to  claim 22 , wherein the housing is made of an insulating material. 
     
     
         24 . Electrical normally open contact according to  claim 14 , wherein the electrically conductive material completely encloses the connecting element and/or the contact elements after immersion, thus forming a force fit connection between the connecting element or the contact elements and the electrically conductive material. 
     
     
         25 . Electrical normally open contact according to  claim 14 , wherein the drive is electric, electromechanical, magnetic, pneumatic and/or pyrotechnical. 
     
     
         26 . Electrical normally open contact according to  claim 17 , wherein the porous metal is formed by foaming a blowing agent in a metal-blowing agent mixture or by washing out a salt in a cast metal-salt mixture.